James Corden has sung with the likes of Adele, Stevie Wonder, and Mariah Carey, but that doesn’t mean The Late Late Show host wasn’t afraid to get in the recording studio with pop superstar Justin Timberlake for their new animated film Trolls.

“I spent like half a day doing singing which is always quite, you know, terrifying if you’re me and it’s him, but I think I got away with it,” Corden told ET’s Cameron Mathison at the Los Angeles premiere of the film on Sunday. “I think it was fun. I certainly loved it.”

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And though he’s had plenty of A-list performances in his famous Carpool Karaoke segment, Corden was quick to point out, “Not in a studio, not like actually singing like it matters.”

In fact, Corden went on to tease that his next guest will be none other than Lady Gaga herself.

"Something happens in that Carpool that's never happened before," he told ET.